@defiler Horribly relevant:

Jason Seifer (of RailsEnvy / Ruby Show fame) and I were recently captivated by a particularly gorgeous technical book cover: Awesome, right? Eric Hodel (of RDoc and RubyGems fame) thought he had a better candidate for crappiest programming book cover: I'm not entirely sold on the Moon being paved with giant keyboard keys while crazy levels of Icelandic ash flash around the Earth at supersonic speeds, but the attire and poses of the characters lended themselves to some mischief. The result is Learning To Scale ROR by Cooper and Seifer: Everyone knows the most important part of a book - and the part by which any book should be judged - is its cover, so Jason Seifer didn't waste any time in releasing a PDF of Learning To Scale ROR . You can even read it on Scribd if you can't read PDFs easily. Consider it a beta edition so far - it's free, so the price is right. Ultimately, t...